Get records 10 min before system datetime in SQL

NOW() + INTERVAL 2 MINUTE
NOW() + INTERVAL 5 MINUTE               
NOW() + INTERVAL 10 MINUTE

SELECT Id, TimeStamp
FROM ISAlive 
WHERE RecordUpdatedDate < DATEADD(minute,-10, SYSDATETIME());

select Id, TimeStamp
from ISAlive
WHERE RecordUpdatedDate = dateadd(minute,-10,getdate())

might be a starting point. Of course, it probably won't match exactly...

...if you want to get the most recent record that fits that criteria, however, try

SELECT TOP 1 ID, TimeStamp
FROM ISAlive
WHERE RecordUpdatedDate <= dateadd(minute, -10, getdate())
ORDER BY RecordUpdatedDate DESC

You can do this with now()

SELECT Id, TimeStamp
FROM ISAlive 
WHERE RecordUpdatedDate <= NOW() - INTERVAL 10 MINUTE;

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