Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b946c81e1a858711a66e7d57f225f6dfc117d044c8d98a4151ca91fa9ec213ab' 
  AND token = '9KD8P9l66jcEIhUsunlg7BE9w2A42ttAuTcca5XzMjs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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