Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '955a9098630261abb7e97eb34173b9d69fb49e86de2d156e4218fb9a352e09ad' 
  AND token = 'Hz8fyRkLLsyXda37rvpXN3uqLkx5Fbvzr3T9mQYSrxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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