Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '053426ad7fd00b1ea93a920ba4f1db0d599635250734374b20b7dbc70ad6bcaa' 
  AND token = 'p3dvZx2lEYhcPW9COMF+e2VJcPj/L40f+jrjatzwn3s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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