Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7cf61a7f836071ac34a831887b5775b8872f82a6fc5cc5501c9fa89e9053825' 
  AND token = 'vdEDm9zJKPB5wtbx0dQBU9wpjk2o6swAazl8ANn0oT8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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