If you secure your Elasticsearch cluster without paying and want to test your queries, it seems to me there are three ways: command line, Deja Vu, Elasticsearch Head extension and if you try to use the Elasticsearch Head extension you will run into https://github.com/mobz/elasticsearch-head/issues/431

Overall, security became free only last year https://www.elastic.co/blog/security-for-elasticsearch-is-no... and knowledge and tooling is thin on the ground.