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SELECT 
  cscart_ult_product_descriptions.product_id, 
  cscart_ult_product_descriptions.short_description, 
  IF(
    cscart_ult_product_descriptions.short_description = "", 
    cscart_ult_product_descriptions.full_description, 
    ""
  ) AS full_description, 
  cscart_ult_product_descriptions.meta_keywords, 
  cscart_ult_product_descriptions.meta_description, 
  cscart_ult_product_descriptions.search_words, 
  cscart_ult_product_descriptions.promo_text 
FROM 
  cscart_ult_product_descriptions 
WHERE 
  cscart_ult_product_descriptions.product_id IN (
    51194, 51193, 51192, 51191, 51190, 51189, 
    19, 51201, 51200, 51199, 51198, 51197, 
    51196, 51195, 131, 111, 51212, 144, 
    51215, 51214, 51213, 51444, 51445, 
    51446, 51447, 51220, 51219, 51218, 
    51217, 51216, 146, 51448, 51449, 51231, 
    51230, 51229, 51228, 51227, 51226, 
    51225, 109, 51272, 51271, 51270, 51269, 
    51268, 51267, 51266, 145, 9, 59, 60, 
    14, 13, 127, 51325, 63, 50984, 51450, 
    51451, 51329, 51328, 51327, 50985, 
    51331, 51330, 50986, 51332, 51339, 
    51338, 51337, 51336, 50988, 113, 51346, 
    118, 84, 51347, 85, 6, 61, 51350, 123, 
    15, 95, 136, 50992, 51374, 51375, 42, 
    51376, 51377, 51378, 51379, 51380, 
    50993, 51381, 51382, 134
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'ru'

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}