Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3d596e379ad05d73d517585693e19fdb1973fd4925cdeee86e0c328e95325507' 
  AND token = 'dl0WapXmvylu2Cjah5rk/AQ0jbLkefLQxWKJOBboDoM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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