Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dae8e68525d7da80760ab95a272a18e135d04ae6377fd5a899eb90f05466aefa' 
  AND token = 'CT8TlOzSXqM5qa6pc2hOCBJDAJmX8aQnYslunamqPrw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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