Tente isto:
SELECT * FROM LoginHistory L
WHERE USER_ID = 'testuser@company.com'
AND L.TIMESTAMP < (SELECT MAX(TIMESTAMP) FROM LoginHistory WHERE USER_ID = 'testuser@company.com');
SELECT * FROM LoginHistory L
WHERE USER_ID = 'testuser@company.com'
AND L.TIMESTAMP < (SELECT MAX(TIMESTAMP) FROM LoginHistory WHERE USER_ID = 'testuser@company.com');