SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    1155, 1156, 1157, 1158, 1159, 1160, 1161, 
    1162, 1163, 1164, 1165, 1172
  )

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": 12,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (1155,1156,1157,1158,1159,1160,1161,1162,1163,1164,1165,1172)"
    }
  }
}