SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    20973, 20974, 20975, 20976, 20977, 20978, 
    20979, 20980, 20981, 20982, 20983, 
    20984, 20985, 20986, 20987, 20988
  ) 
  OR sale_product_id IN (
    20973, 20974, 20975, 20976, 20977, 20978, 
    20979, 20980, 20981, 20982, 20983, 
    20984, 20985, 20986, 20987, 20988
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00036

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 (20973,20974,20975,20976,20977,20978,20979,20980,20981,20982,20983,20984,20985,20986,20987,20988) or cscart_mb_salvage_cases.sale_product_id in (20973,20974,20975,20976,20977,20978,20979,20980,20981,20982,20983,20984,20985,20986,20987,20988)"
        }
      }
    }
  }
}