UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '2HlLDh4hhitSn5SWxLCCFnl2RdeHo2Pko7khmYCwq/8=' 
WHERE 
  key_id = '392b5e85c31f905fd2a19a2df9f512f09b7c8ad501c5a81aecbe0b951defc710' 
  AND (
    token = '2HlLDh4hhitSn5SWxLCCFnl2RdeHo2Pko7khmYCwq/8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00044