SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    21519, 21520, 21521, 21522, 21523, 21524, 
    21525, 21526, 21527, 21528, 21529, 
    21530, 21531, 21532, 21533, 21534
  ) 
  OR sale_product_id IN (
    21519, 21520, 21521, 21522, 21523, 21524, 
    21525, 21526, 21527, 21528, 21529, 
    21530, 21531, 21532, 21533, 21534
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00025

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 (21519,21520,21521,21522,21523,21524,21525,21526,21527,21528,21529,21530,21531,21532,21533,21534) or cscart_mb_salvage_cases.sale_product_id in (21519,21520,21521,21522,21523,21524,21525,21526,21527,21528,21529,21530,21531,21532,21533,21534)"
        }
      }
    }
  }
}