SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    21423, 21424, 21425, 21426, 21427, 21428, 
    21429, 21430, 21431, 21432, 21433, 
    21434, 21435, 21436, 21437, 21438
  ) 
  OR sale_product_id IN (
    21423, 21424, 21425, 21426, 21427, 21428, 
    21429, 21430, 21431, 21432, 21433, 
    21434, 21435, 21436, 21437, 21438
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "read_sorted_file": {
      "filesort": {
        "sort_key": "cscart_mb_salvage_cases.updated_at desc, cscart_mb_salvage_cases.case_id desc",
        "table": {
          "table_name": "cscart_mb_salvage_cases",
          "access_type": "ALL",
          "rows": 58,
          "filtered": 100,
          "attached_condition": "cscart_mb_salvage_cases.auction_product_id in (21423,21424,21425,21426,21427,21428,21429,21430,21431,21432,21433,21434,21435,21436,21437,21438) or cscart_mb_salvage_cases.sale_product_id in (21423,21424,21425,21426,21427,21428,21429,21430,21431,21432,21433,21434,21435,21436,21437,21438)"
        }
      }
    }
  }
}