UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Nq8aqyRDRz9lkJVCZcWepYB7t9zVm9ifvGnSjeZZ+wE=' 
WHERE 
  key_id = '6d6e0ebc67edf3eac536191596c282c898238d38be849f40872539282e8df206' 
  AND (
    token = 'Nq8aqyRDRz9lkJVCZcWepYB7t9zVm9ifvGnSjeZZ+wE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )