UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'a+L91QiWco4VZ4Z1Kv3MvFdeMc9Po32BgCfzOcyR7P4=' 
WHERE 
  key_id = 'd253abed13d3aa989183ccb2c4a0a81cddf81ae32f3af7b4d7e78012d6ef3438' 
  AND (
    token = 'a+L91QiWco4VZ4Z1Kv3MvFdeMc9Po32BgCfzOcyR7P4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )