Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd50860c48b194371498feedd811e7585658405c579292f37d91ae4425e629224' 
  AND token = 'Mp/g0Dz9FHa2PzU/QUn9TeFAhNDZuUuIEtAIlX4ZKuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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