Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '462359e9479ecd46aef3c1fad3ba6e2863df8c7555dd486c89785ed9bf9b9cdc' 
  AND token = 'Xh1EPIMSm0VOs6ZUEJVc6XTzDmwcAu7QmLTIwLwG9Bo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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