Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e71d2c74c0d62f589596c768d70d91b0ad79a7c77747cf7beec5dc630a20d140' 
  AND token = 'GGCFsqkb4FCLZe3qScqncOGnAimzFFODlkab2spknag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00072

JSON explain

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