Perhaps the closest thing to this remaining in 95 is that the setup lets you choose the “Windows 3.1” GUI, which means the old Program Manager is the shell instead of Explorer. Quite a different experience though.
I set it up with Ctrl+Shift+Space as a hotkey so it's easy to open. I have about two million files on my C: drive. When I open Everything it displays them all, and then as I start typing in the search box it filters the list as fast as I can type. Highly recommended!
It just searches filenames, not content, but often that is enough.