UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'CZDXVrstIb+iKf9zrvFSJ/LXAsn0bRpNEwAFcWfIzAc=' 
WHERE 
  key_id = '18ff759a7b70301b31e782a4dea02e77d052395a3203bd62e46253307245da51' 
  AND (
    token = 'CZDXVrstIb+iKf9zrvFSJ/LXAsn0bRpNEwAFcWfIzAc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )