SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    51132, 51131, 51134, 51133, 51130, 41, 
    51146, 51145, 38, 51148, 51147, 51150, 
    51149, 37, 51169, 51168, 51167, 51166, 
    90, 51171, 51170, 51209, 51208, 51207, 
    51206, 124, 51221, 137, 51224, 51223, 
    126, 115, 81, 11, 51357, 51360, 51359, 
    51358, 51361, 30, 51362, 51363, 51364, 
    51365, 31, 51366, 51367, 51368, 51369, 
    140, 51385, 51386, 51387, 51388, 51389, 
    88, 51395, 51396, 51397, 51555, 51556, 
    80, 51398, 51399
  ) 
  AND cscart_product_descriptions.lang_code = 'ru'

Query time 0.00132

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "44.81"
    },
    "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": 64,
      "rows_produced_per_join": 64,
      "filtered": "100.00",
      "index_condition": "((`test_uchur_k`.`cscart_product_descriptions`.`product_id` in (51132,51131,51134,51133,51130,41,51146,51145,38,51148,51147,51150,51149,37,51169,51168,51167,51166,90,51171,51170,51209,51208,51207,51206,124,51221,137,51224,51223,126,115,81,11,51357,51360,51359,51358,51361,30,51362,51363,51364,51365,31,51366,51367,51368,51369,140,51385,51386,51387,51388,51389,88,51395,51396,51397,51555,51556,80,51398,51399)) and (`test_uchur_k`.`cscart_product_descriptions`.`lang_code` = 'ru'))",
      "cost_info": {
        "read_cost": "38.41",
        "eval_cost": "6.40",
        "prefix_cost": "44.81",
        "data_read_per_join": "292K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "meta_keywords",
        "meta_description",
        "search_words",
        "promo_text"
      ]
    }
  }
}