UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '87rxJ2wS3oiFy0i11rI5zx2YRZbwyn4dKuUm7lE8wvE=' 
WHERE 
  key_id = '31c85985aa3976ed98eace2627d2803024b8134b6cae808393b1eb242ae39615' 
  AND (
    token = '87rxJ2wS3oiFy0i11rI5zx2YRZbwyn4dKuUm7lE8wvE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )