MySQL’s UNIX_TIMESTAMP function is used to convert a given date or datetime value to a Unix timestamp. The Unix timestamp represents the number of seconds that have elapsed since January 1, 1970, at 00:00:00 UTC.
Here is an example of how to use the UNIX_TIMESTAMP function in MySQL:
SELECT UNIX_TIMESTAMP('2022-01-01 12:00:00') AS unix_timestamp;
This query will return the Unix timestamp for the date and time ‘2022-01-01 12:00:00’.