UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '4XXDMbWKAOfgXQPhFn+avnXquJvguL4EtI+z+O8g+rI=' 
WHERE 
  key_id = 'd786721aa30b8738c54f3db04caa37dca7bad3905ec065dd26833234ff0f9708' 
  AND (
    token = '4XXDMbWKAOfgXQPhFn+avnXquJvguL4EtI+z+O8g+rI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )