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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 (
    19900, 21923, 19863, 19875, 20154, 20958, 
    19890, 20088, 19901, 21924, 19865, 
    19876, 20959, 19891, 20089, 19925, 
    19902, 21102, 19866, 19877, 20724, 
    21925, 19892, 20091, 19883, 19903, 
    21103, 19867, 19880, 20725, 21926, 
    19893, 20092, 20087, 19904, 19868, 
    19881, 22277, 19894, 20093, 19888, 
    19906, 18664, 19869, 19882, 19895, 
    20094, 19879, 19907, 19131, 19870, 
    19884, 20728, 19896, 20971, 19878, 
    19908, 20576, 19871, 19885, 19897, 
    20972, 19905, 19909, 20955, 19872, 
    19886, 21078, 19898, 20973, 19820, 
    19873, 19910, 20956, 18661, 19899, 
    20974, 19860, 19874, 19911, 20957, 
    19889, 18662, 20723, 21749, 20726, 
    20727, 20065, 19887
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'ru'

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}