UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'b3XeSw6qnIr+KADYtZ2FiEhFbI81vbnnrVZ8SIu9YJM=' 
WHERE 
  key_id = '4e21bb101717a3c0f03c084922624f5c1f592af9ad84e2bacb29af3324025c68' 
  AND (
    token = 'b3XeSw6qnIr+KADYtZ2FiEhFbI81vbnnrVZ8SIu9YJM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )