Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19688f6f05db0ed9c7cb9388c2231e297662b925072f9fa3cd7788f5a47a8842' 
  AND token = 'hZrNYAX5d9y8fI1syIJE0WZMssWeW0edaTEuVKmVcww=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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