UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'O2MIEFX1LVzB9Jv3EcAdzXz7pyq+tfxqmrYmoRqPfZQ=' 
WHERE 
  key_id = 'b6bb1a59d233bcde8ccee961b49bb972842117b3c06cc671cd6ae88f6d1bb0f0' 
  AND (
    token = 'O2MIEFX1LVzB9Jv3EcAdzXz7pyq+tfxqmrYmoRqPfZQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )