Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e05b315fa09feccb54f64f4fbe92059e16f1aa8390bf3828b722b6146f4e98f' 
  AND token = 'D9hiFMGVbZaYXvimKzt/WXo60+2J1abdtANe8gxZdlo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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