Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d4769cb4b61c1278379e535206a84bfe444a2ef41a3e2103e58ba522a0079ae' 
  AND token = '3XbpIh7SeRJHc+iJ+NPCDp58xH7GToA9E/38zM+Ms6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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