Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0aeceeb7d53ce4ca84583c23f3ba4720781e86e52190ece05c0a3077cd87c2a7' 
  AND token = 't2pzXDjVlFhwzWs8UZ3gzGvAnIbdcZMpj/rIHwY6acA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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