UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '16gp7AIVGz2JUPvcu7dYU7kaI1UdbIBm41OW/amvjEc=' 
WHERE 
  key_id = '642eceb355721577145263e736fa098e3c29ce36a6811b9141c6f2769fd16398' 
  AND (
    token = '16gp7AIVGz2JUPvcu7dYU7kaI1UdbIBm41OW/amvjEc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )