UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'sx6mz3/eFUu6pBCLIvWg+WRgYlxMMSW2lsQBkUs6VXQ=' 
WHERE 
  key_id = '3929073f506a19f30b12deabf5e966ea12673eed34a54d25e75480dbf2659a33' 
  AND (
    token = 'sx6mz3/eFUu6pBCLIvWg+WRgYlxMMSW2lsQBkUs6VXQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )