Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9db592eb47d8230468b03ee7ef1e3340037a9933c474fc2967efec8c9099f7e7' 
  AND token = 'eFaxc9oWvpteyBQ06vU9JDGd3fkBhkzK/aIfZ3NFs2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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