Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e85e354c67882a1ca84889235132309cd1df136b20ae1214db78d21790dd919b' 
  AND token = 'Sc4MpLGLBjX8YTCvtwC8xvke3ApPwj13GM4rqnVAyNM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}