Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a65d0044fe87a7089365fc4d9d01346217a083d78559bc5bb312ad9220041696' 
  AND token = 'oXwQanyACJ/lQNPGl2TOEAyE89enF4FribrWqKPk7q4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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