SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96c3e3590f56b38e92889081e7df725fd628a2e2e79e3a24b3df4e2e4ac26b75' 
  AND token = 'YU0HAkLvCMVPO7V1KbSejGr/BN8fF256SKbdZlSjyh4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables