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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 (
    347, 346, 345, 344, 343, 342, 341, 340, 
    339, 338, 335, 334, 333, 332, 331, 330, 
    328, 325, 324, 323, 322, 321, 320, 319, 
    318, 317, 316, 315, 314, 313, 312, 311, 
    310, 309, 308, 307, 306, 305, 304, 303, 
    302, 301, 300, 299, 298, 297, 296, 295, 
    294, 293, 292, 291
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00023

JSON explain

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