UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'htrelh25BaAT0TwALv97FETHAqWAbT2o9HdbipRzDos=' 
WHERE 
  key_id = '715abcd9a57bec01839f3f0cdcdad9e763082cdfb9e6aa508c760f73717cb300' 
  AND (
    token = 'htrelh25BaAT0TwALv97FETHAqWAbT2o9HdbipRzDos=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )