SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  IF(
    shared_descr.product_id IS NOT NULL, 
    shared_descr.product, descr1.product
  ) as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
  LEFT JOIN cscart_ult_product_descriptions shared_descr ON shared_descr.product_id = products.product_id 
  AND shared_descr.company_id = 1 
  AND shared_descr.lang_code = 'en' 
WHERE 
  1 
  AND cscart_categories.category_id IN (308) 
  AND companies.status IN ('A') 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND products.parent_product_id = 0 
GROUP BY 
  products.product_id 
ORDER BY 
  product asc, 
  products.product_id ASC 
LIMIT 
  288, 96

Query time 0.05424

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1325.03"
    },
    "ordering_operation": {
      "using_filesort": true,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": false,
        "nested_loop": [
          {
            "table": {
              "table_name": "cscart_categories",
              "access_type": "const",
              "possible_keys": [
                "PRIMARY",
                "c_status",
                "p_category_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 1,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.10",
                "prefix_cost": "0.00",
                "data_read_per_join": "4K"
              },
              "used_columns": [
                "category_id",
                "storefront_id",
                "usergroup_ids",
                "status"
              ]
            }
          },
          {
            "table": {
              "table_name": "companies",
              "access_type": "ALL",
              "possible_keys": [
                "PRIMARY"
              ],
              "rows_examined_per_scan": 2,
              "rows_produced_per_join": 1,
              "filtered": "50.00",
              "cost_info": {
                "read_cost": "0.62",
                "eval_cost": "0.10",
                "prefix_cost": "0.72",
                "data_read_per_join": "5K"
              },
              "used_columns": [
                "company_id",
                "status",
                "company"
              ],
              "attached_condition": "(`gaseus`.`companies`.`status` = 'A')"
            }
          },
          {
            "table": {
              "table_name": "products_categories",
              "access_type": "ref",
              "possible_keys": [
                "PRIMARY",
                "pt"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "const"
              ],
              "rows_examined_per_scan": 2529,
              "rows_produced_per_join": 2529,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "16.05",
                "eval_cost": "252.90",
                "prefix_cost": "269.67",
                "data_read_per_join": "39K"
              },
              "used_columns": [
                "product_id",
                "category_id"
              ]
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "status",
                "idx_parent_product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "gaseus.products_categories.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 126,
              "filtered": "5.00",
              "cost_info": {
                "read_cost": "632.25",
                "eval_cost": "12.65",
                "prefix_cost": "1154.82",
                "data_read_per_join": "825K"
              },
              "used_columns": [
                "product_id",
                "product_type",
                "status",
                "company_id",
                "usergroup_ids",
                "parent_product_id"
              ],
              "attached_condition": "((`gaseus`.`products`.`company_id` = `gaseus`.`companies`.`company_id`) and (`gaseus`.`products`.`parent_product_id` = 0) and ((`gaseus`.`products`.`usergroup_ids` = '') or (0 <> find_in_set(0,`gaseus`.`products`.`usergroup_ids`)) or (0 <> find_in_set(1,`gaseus`.`products`.`usergroup_ids`))) and (`gaseus`.`products`.`status` = 'A'))"
            }
          },
          {
            "table": {
              "table_name": "prices",
              "access_type": "ref",
              "possible_keys": [
                "usergroup",
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "key": "usergroup",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "gaseus.products_categories.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 126,
              "filtered": "99.97",
              "using_index": true,
              "cost_info": {
                "read_cost": "31.61",
                "eval_cost": "12.64",
                "prefix_cost": "1199.08",
                "data_read_per_join": "2K"
              },
              "used_columns": [
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "attached_condition": "((`gaseus`.`prices`.`lower_limit` = 1) and (`gaseus`.`prices`.`usergroup_id` in (0,0,1)))"
            }
          },
          {
            "table": {
              "table_name": "shared_descr",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "product_id",
                "company_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id",
                "lang_code",
                "company_id"
              ],
              "key_length": "13",
              "ref": [
                "gaseus.products_categories.product_id",
                "const",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 126,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "37.20",
                "eval_cost": "12.64",
                "prefix_cost": "1248.93",
                "data_read_per_join": "481K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "company_id",
                "product"
              ]
            }
          },
          {
            "table": {
              "table_name": "descr1",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id",
                "lang_code"
              ],
              "key_length": "9",
              "ref": [
                "gaseus.products_categories.product_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 126,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "63.47",
                "eval_cost": "12.64",
                "prefix_cost": "1325.03",
                "data_read_per_join": "576K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "product"
              ]
            }
          }
        ]
      }
    }
  }
}

Result

product_id product company_name product_type parent_product_id
1615 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1616 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1617 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1618 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1619 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1620 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1621 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1622 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1623 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1624 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1625 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5299 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5300 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5301 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5302 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5303 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5304 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5305 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5306 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5307 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5308 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5309 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5310 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5311 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5312 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5313 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5314 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5315 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5316 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5317 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5318 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5319 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5320 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5321 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5322 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5323 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5324 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
5325 Main and line pressure regulator Oxygen 10-200 bar Vulkan LHR300/200 DIN Gaseus P 0
1627 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1628 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1629 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1630 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1631 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1632 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1633 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1634 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1635 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1636 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1637 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1638 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1639 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1640 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1641 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1642 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1643 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1644 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1645 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1646 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1647 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1648 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1649 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1650 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1651 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
1652 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5326 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5327 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5328 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5329 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5330 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5331 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5332 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5333 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5334 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5335 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5336 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5337 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5338 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5339 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5340 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5341 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5342 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5343 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5344 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5345 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5346 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5347 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5348 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5349 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5350 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5351 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
5352 Main and line pressure regulator Vulkan LHR 200/200 DIN Oxygen DIN 477-1, 10 - 200 bar Gaseus P 0
2832 Main and line regulator CO₂/Argon 0-100 bar Vulkan LHR200/100 BSP Gaseus P 0
2833 Main and line regulator CO₂/Argon 0-100 bar Vulkan LHR200/100 BSP Gaseus P 0
2834 Main and line regulator CO₂/Argon 0-100 bar Vulkan LHR200/100 BSP Gaseus P 0
2835 Main and line regulator CO₂/Argon 0-100 bar Vulkan LHR200/100 BSP Gaseus P 0
6417 Main and line regulator CO₂/Argon 0-100 bar Vulkan LHR200/100 BSP Gaseus P 0