UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ukjl6Ncj9UhRJO5hM5SRl8q2GNvkGI4gPygEKuJkY1o=' 
WHERE 
  key_id = '51b8fdb4025e02b012c295c0b16a56029e3851b33c06b009914ff7e31a45ac39' 
  AND (
    token = 'ukjl6Ncj9UhRJO5hM5SRl8q2GNvkGI4gPygEKuJkY1o=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )