I think Joey Keys is a reference to Joey Tempest, fellow stadium poodle in the late 80's with Bon Jovi, know to most as the front man in Europe.
Europe and Bon Jovi headlined a large show in '89, with support from Vixen and Skid Row respectively. Tempest and Jovi appeared to be freinds as i have seen several photos of them, all colourfull whirls of hair and ripped jeans, doing their RAWK attitude to the camera.
Anyway, Tempest used to collect hotel room keys when on tour and when dissallowed them by management he would often steal them to add to his collection. Could Jon be singing about him on 'Joey Keys'?