Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f83ac9704b3cb793a4b89c0ab2ae16f1025e6edc5b344bb707883f7688e98a2' 
  AND token = 'tM+knLsJKsI4/JSydF6INFMNE/cL8QFLXhLkTMnDnF0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}