Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05290d7dcd85128f64e0d8b74328d0f86f9e02ffa23116473a995cf83df4070f' 
  AND token = 'vw8PFPnJm1bhxwT34RF8nmufQZmdabp0jLvhkQ4Gh5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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