UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'p6n8141kulSKJfjXbqK5pLW78CCeWN3o0yeH18QR+qo=' 
WHERE 
  key_id = '4bea0599fe5d5dd777585ae0b7a00675c89da14e16896c34db3af0055b783f45' 
  AND (
    token = 'p6n8141kulSKJfjXbqK5pLW78CCeWN3o0yeH18QR+qo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )