UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MC1yEj98WSK8aOSoNZ5JaB2+TTTQpqshEg3csY3ADFc=' 
WHERE 
  key_id = 'a1c0fd6938e56cb551de65c7dad9ac318e05b2d0634f3fe275c5e5482b6ca4af' 
  AND (
    token = 'MC1yEj98WSK8aOSoNZ5JaB2+TTTQpqshEg3csY3ADFc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )