SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text, 
  cscart_product_descriptions.unit_name 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    2048, 2049, 2050, 2051, 2052, 2053, 2054, 
    2055, 2056, 2057, 2058, 2059, 2060, 
    2061, 2062, 2063, 2064, 2065, 2066, 
    2067, 2068, 2069, 2070, 2071, 2072, 
    2073, 2074, 2075, 2076, 2077, 2078, 
    2079, 2080, 2081, 2082, 2083, 2084, 
    2085, 2086, 2087, 2088, 2089, 2090, 
    2091, 2092, 2093, 2094, 2095, 2096, 
    2097, 2098, 2099, 2100, 2101, 5722, 
    5723, 5724, 5725, 5726, 5727, 5728, 
    5729, 5730, 5731, 5732, 5733, 5734, 
    5735, 5736, 5737, 5738, 5739, 5740, 
    5741, 5742, 5743, 5744, 5745, 5746, 
    5747, 5748, 5749, 5750, 5751, 5752, 
    5753, 5754, 5755, 5756, 5757, 5758, 
    5759, 5760, 5761, 5762, 5763
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00129

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "115.60"
    },
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "9",
      "rows_examined_per_scan": 96,
      "rows_produced_per_join": 96,
      "filtered": "100.00",
      "index_condition": "((`gaseus`.`cscart_product_descriptions`.`product_id` in (2048,2049,2050,2051,2052,2053,2054,2055,2056,2057,2058,2059,2060,2061,2062,2063,2064,2065,2066,2067,2068,2069,2070,2071,2072,2073,2074,2075,2076,2077,2078,2079,2080,2081,2082,2083,2084,2085,2086,2087,2088,2089,2090,2091,2092,2093,2094,2095,2096,2097,2098,2099,2100,2101,5722,5723,5724,5725,5726,5727,5728,5729,5730,5731,5732,5733,5734,5735,5736,5737,5738,5739,5740,5741,5742,5743,5744,5745,5746,5747,5748,5749,5750,5751,5752,5753,5754,5755,5756,5757,5758,5759,5760,5761,5762,5763)) and (`gaseus`.`cscart_product_descriptions`.`lang_code` = 'en'))",
      "cost_info": {
        "read_cost": "106.01",
        "eval_cost": "9.60",
        "prefix_cost": "115.61",
        "data_read_per_join": "438K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description",
        "meta_keywords",
        "meta_description",
        "search_words",
        "promo_text",
        "unit_name"
      ]
    }
  }
}