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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 (
    2271, 2336, 2337, 2338, 2339, 2412, 2413, 
    2414, 2415, 2416, 2417, 2418, 2419, 
    2420, 2514, 2515, 2516, 2517, 2518, 
    2604, 2605, 2606, 2607, 3840, 3841, 
    3842, 3843, 5867, 5868, 5869, 5870, 
    5871, 5935, 5936, 5937, 5938, 5939, 
    6012, 6013, 6014, 6015, 6016, 6017, 
    6018, 6019, 6020, 6196, 6197
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00026

JSON explain

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