Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '84e501d148b95873ddb478b74b8fa993081fcaf758557e51e02d0c97eeed33a6' 
  AND token = '7qWIo+sfWkAMkLzfSnYzmgmdZq8Icht03OgwV3YuB+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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