Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5ccb537dfce339642c2bb8f322d9c728f944038d320d064a9c74fbf91b935fa' 
  AND token = '0NXdIai6FL1DE/LQJsTedeOyZE6rR362L7kfE0GTxeA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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