Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ac5287d3dc373345849a8a6a23cbffdccc0ae7ac650371d09e97585b6a3f7fd' 
  AND token = 'jCbLHpWRiDNFX/MLyHxBm3LTaQ0mDwmYDP96h7PpjGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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