SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    631, 1111, 632, 1112, 1062, 1101, 906, 
    1099, 831, 830, 1065, 1056, 1059, 543, 
    510, 1017, 779, 778, 1113, 1114, 1115, 
    1096, 1061, 1100
  )

Query time 0.00125

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": 24,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (631,1111,632,1112,1062,1101,906,1099,831,830,1065,1056,1059,543,510,1017,779,778,1113,1114,1115,1096,1061,1100)"
    }
  }
}