Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33511fe72d5955f66b6756fd2bc4d5248aedbd5cef35e4a5eb00a6cc8290f8d5' 
  AND token = 'xTshTYj2T2HQ9SVbZ/hbZ/fzc6RNVEcoNARzMT7aROo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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