SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    1371, 1493, 340, 293, 379, 1159, 311, 
    406, 304, 1058, 1188, 1293, 1116, 1368, 
    1020, 1136, 2500, 2513, 1135, 1252, 
    286, 118, 932, 1138, 1144, 1160, 1200, 
    354, 989, 2503, 1247, 1145
  )

Query time 0.00108

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 32,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (1371,1493,340,293,379,1159,311,406,304,1058,1188,1293,1116,1368,1020,1136,2500,2513,1135,1252,286,118,932,1138,1144,1160,1200,354,989,2503,1247,1145)"
    }
  }
}