It does, and I've never seen kdeconnect-indicator packaged separately. I'm pretty sure it depends on some KDE packages though, so maybe OP wants to avoid installing them for some reason.
You will almost certainly be able to use KDE Connect under Xfce. However, some dependencies will most likely be installed during the installation, which in turn have their own dependencies. With a bit of bad luck, you will install half of Plasma, so to speak.
KDE's documentation mentions indicator-kdeconnect for using it with other environments, but it hasn't been updated in 4 years. Might still work, might not.