UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '4Pw5Y/7ZDQ0OCqj8kuP4dCH0rN0fPL21kVK3K9NN1Yk=' 
WHERE 
  key_id = '8dbe8d6860f776c2b13a7294691a1cda3e08f30d06cc7a36b2d8a8a33f993b16' 
  AND (
    token = '4Pw5Y/7ZDQ0OCqj8kuP4dCH0rN0fPL21kVK3K9NN1Yk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )