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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 (
    4487, 4731, 4754, 4772, 4756, 4476, 4477, 
    4554, 4556, 4558, 4621, 4773, 4703, 
    4623, 4624, 18036, 4757, 4702, 4560, 
    4478, 4774, 4494, 4493, 18037
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00033

JSON explain

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