Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c32fd09ae8c788df300268433661a8ca1d13113e150499e551062d2001360e31' 
  AND token = 'SmUggFBlvFi1iQ21xwydnmIvmLYK4aG/F8JS+jx/jts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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