Need understanding of "INTERVAL" in MySQL statement

Please see MySQL statement used to delete records older than one minute. Can you please explain the usage of INTERVAL in the given statement?

DELETE FROM `token_tbl` WHERE `dateCreate` < (Now() - INTERVAL 1 MINUTE)

>Solution :

interval denotes a period of time. I.e., Now() - INTERVAL 1 MINUTE means "one minute before the current time". Then the condition would be any records that have dateCreate that are older than a minute ago.