Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a786dd33ff1cefdbfec93e22836d9d5eaddea57bdf081ab6bb82dae50cbec01' 
  AND token = '4CtGKT4lq7IuH9Uv3oZg66kIYoRFC/0N5hULarTaoxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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