The "edited" tab of your Data Explorer profile will show you all queries you've worked on grouped within their revision set, so that each entry on that page is a "distinct" query (of which there may be many revisions).
If you have some queries you aren't interested in, this list isn't necessarily ideal, since the queries you want to save can be buried underneath other ones. In that case, favouriting the query is currently the best way to go, although I admit that not being able to do so from the edit screen is rather annoying (you can click-thru the permalink, though).
I suppose it would be possible to have a view where you could see select queries that you've created through some kind of explicit hide/show option, but I'm not sure if there's any benefit to that so long as the favouriting process from the edit page is improved.