Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '470eaba8761e29b21bde9edf981ae458cec1234f06a4d1d8f0ec756fbba1c34f' 
  AND token = 'RJHw0XFGBtJg7nf21ZuW194HC86a5SQl/+6ByCh/geo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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