Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be9c5ceba34ab6a3c32de4b48e55be62d4a358ca21506e730f470fd49afda66e' 
  AND token = 'NV2liTV9RlW3Vot3PssT6DFsgXsiOkLjdqHHi5bmw7I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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