SELECT * FROM callback c WHERE DATE(c.createdtime) = CURRENT_DATE AND EXTRACT(EPOCH FROM (NOW() - c.createdtime)) / 60 < 15;select extract(epoch from now());
SELECT * FROM callback c WHERE DATE(c.createdtime) = CURRENT_DATE AND EXTRACT(EPOCH FROM (NOW() - c.createdtime)) / 60 < 15;select extract(epoch from now());