Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f471adcc77a070751fe056cb7362fc55fab847831d185440ea89ee8528b1cae4' 
  AND token = 'z6LbHNkXFZp4feKf4Q0NHb5nNxYdifP8XUZLgKnrIU0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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