SELECT 
  cscart_product_feature_variants.variant_id, 
  cscart_product_feature_variants.position, 
  cscart_product_feature_variants.color, 
  cscart_product_feature_variant_descriptions.variant 
FROM 
  cscart_product_feature_variants 
  LEFT JOIN cscart_product_feature_variant_descriptions ON cscart_product_feature_variants.variant_id = cscart_product_feature_variant_descriptions.variant_id 
  AND cscart_product_feature_variant_descriptions.lang_code = 'en' 
WHERE 
  cscart_product_feature_variants.variant_id IN (
    1712, 2377, 2378, 1660, 1900, 1234, 1202, 
    1933, 1973, 1904, 1288, 1954, 1935, 
    2382, 2197, 1324, 1659, 1836, 1899, 
    1912, 2335, 1789, 2182, 1999, 2366, 
    1941, 1905, 1787, 2290, 1988, 1241, 
    2340, 2367, 2363, 1930, 2361, 2333, 
    1748, 1995, 2075, 1902, 2000, 1389, 
    1931, 2357, 1245, 1881, 1235, 1994, 
    2354, 1972, 2108, 1984, 2268, 1996, 
    2355, 1867, 1251, 1254, 1690, 2353, 
    1545, 1797, 1861, 2360, 1256, 2358, 
    2359, 2365
  ) 
ORDER BY 
  cscart_product_feature_variants.position ASC, 
  cscart_product_feature_variant_descriptions.variant ASC

Query time 0.00074

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "72.46"
    },
    "ordering_operation": {
      "using_temporary_table": true,
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_product_feature_variants",
            "access_type": "range",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id"
            ],
            "key_length": "3",
            "rows_examined_per_scan": 69,
            "rows_produced_per_join": 69,
            "filtered": "100.00",
            "index_condition": "(`gaseus`.`cscart_product_feature_variants`.`variant_id` in (1712,2377,2378,1660,1900,1234,1202,1933,1973,1904,1288,1954,1935,2382,2197,1324,1659,1836,1899,1912,2335,1789,2182,1999,2366,1941,1905,1787,2290,1988,1241,2340,2367,2363,1930,2361,2333,1748,1995,2075,1902,2000,1389,1931,2357,1245,1881,1235,1994,2354,1972,2108,1984,2268,1996,2355,1867,1251,1254,1690,2353,1545,1797,1861,2360,1256,2358,2359,2365))",
            "cost_info": {
              "read_cost": "41.41",
              "eval_cost": "6.90",
              "prefix_cost": "48.31",
              "data_read_per_join": "78K"
            },
            "used_columns": [
              "variant_id",
              "color",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_product_feature_variant_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "gaseus.cscart_product_feature_variants.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 69,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "17.25",
              "eval_cost": "6.90",
              "prefix_cost": "72.46",
              "data_read_per_join": "215K"
            },
            "used_columns": [
              "variant_id",
              "variant",
              "lang_code"
            ]
          }
        }
      ]
    }
  }
}