Hi,
That fast is very unlikely, unless you have a very powerful server. That search they have there is a fully custom made solution for their database, and probably running on a powerful dedicated server or VPS. WordPress in general is much slower due to the massive overhead, especially when there are a lot of plugin activated (usually over 10-15).
I have checked the performance tracker, and it reports a 0.05s query time, that is excellent: https://i.imgur.com/0VrvgKt.png
I am also seeing response times of around 2 seconds, which I think is very optimal, considering you have over 50 plugins installed, which are automatically loaded by wordpress. I think this cannot get much faster, unless some plugins are removed or optimized
The built in “auth check” queries that wordpress triggers have very similar, or even worse performance, so I think the configuration is optimal.
