"Garden of Eden" is an unreleased song by Lana Del Rey. The song has not leaked.
Background
The song was scrobbled by a reliable Last.fm insider around 2012 with the track name "Garden of Eden 2" under an album called "Lana Del Rey - Demos", with the song length being 4:12. This person also scrobbled "Like Your Friends Did (song) that year with an accurate length and title, which would later leak in 2016.