[Ruby] How to get / select only records that are more than XX years old

How to get / select only records that have been created for more than 〇〇

Conclusion

Record.where('created_at < ?', 1.minute.ago).order(created_at: :desc)

The important thing is ('created_at <?', 〇〇)

Just enter your favorite conditions in 〇〇.

1 hour ago 1.hour.ago One day ago 1.day.ago

Question

Are there any methods or better practices that don't use quotation marks?

The information was unexpectedly difficult to find. .. ..