How to do something like this using ActiveRecord?

```
Reservation.where("start..finish < 1 hour")

```

**start** and **finish** are time records:

```
2.2.1 :009 > Reservation.last.start.class
  Reservation Load (1.1ms)  SELECT  "reservations".* FROM "reservations"  ORDER BY "reservations"."id" DESC LIMIT 1
  Reservation Load (1.1ms)  SELECT  "reservations".* FROM "reservations"  ORDER BY "reservations"."id" DESC LIMIT 1
 => ActiveSupport::TimeWithZone 

```

Thanks.