I have a restaurant that has `hours`. Each `Hour` object as an `open_at` and a `close_at` time. How do I compare just the time part of the DateTime in the db with the time of Time.now?

`hours.today.where("open_at <= ? AND close_at >= ?", Time.now, Time.now).any?`

edit: I tried rephrasing the question:

I have an `Hour` object `h` with an attribute `close_at` of type `Time`. How can I compare just the time part in the db with `Time.current`?

`2.1.3 :014 > h.close_at.class
 => Time 
 2.1.3 :015 > h.close_at
 => 2000-01-01 22:44:00 UTC 
 2.1.3 :016 > Time.current
 => Wed, 15 Oct 2014 17:32:27 UTC +00:00 
 2.1.3 :017 > h.close_at >= Time.current
 => false`
I want the last line to return true. (22:44 > 17:32)