Antique keys are usually attractive objects because of their shapes and materials, as well as their meaning and implications, as you propose in your commentary. There could also be keys that have lost their function or destiny; which would imply that they have lost their essence.
I like the effect achieved with the suspension of the keys in the air and the lighting that creates the shadows. On the table I see some objects that, if I am not mistaken, belong to the field of visual arts (lenses, film, etc.).