Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e7fe38f6ad0774e0b604ef205c9211b761077e2c632b4227627633a80e41e5c' 
  AND token = 'bJiGPlKNU7gc13C7V8x//xpJSL+vc+KixNX7m6p1oKU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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