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SELECT 
  cscart_product_review_prepared_data.product_id AS product_id, 
  cscart_product_review_prepared_data.average_rating AS average_rating, 
  cscart_product_review_prepared_data.reviews_count AS reviews_count 
FROM 
  cscart_product_review_prepared_data 
WHERE 
  cscart_product_review_prepared_data.product_id IN (
    51020, 51027, 51067, 51423, 51435, 51431, 
    51031, 51062, 51028, 51441, 51434, 
    51033, 51432, 51026, 51042, 51030, 
    51032, 51425, 51070, 51035, 51059, 
    51066, 51041, 51038, 51023, 51039, 
    51056, 51069, 51040, 51050, 51065, 
    51036
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 1

Query time 0.00038

JSON explain

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