Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09599bc94782febd7a37ddf6bed7e78891c6b26f27e8441f3459fa6c958c4861' 
  AND token = '/v5uh/Ybr09wm9/2Cab48Sj9x2xRPZ+7/DQ5kpHQW4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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