mysql determined time difference with time satisfies TIMESTAMPDIFF range

SELECT  TIMESTAMPDIFF(MINUTE, '2018-03-20 09:00:00', '2018-03-22 10:00:00') result;

TIMESTAMPDIFF first argument, choose here is the difference between the two is how much MINUTE minutes, the result can be negative.

Example: To determine if the difference between the absolute time is within 10 minutes or less, may be