UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'U8BUqb3K5ktlh60X6ShX/bfbBdhrOaGUqiEMmoviq+E=' 
WHERE 
  key_id = 'b6c61d525abcb2eac22f72452ee7e7d47d1b1a401d0fe69841147f440e3ac39c' 
  AND (
    token = 'U8BUqb3K5ktlh60X6ShX/bfbBdhrOaGUqiEMmoviq+E=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )