Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69731a9e1a195886a7723971df8c1d5564176ea5f364a08e1b355ae937c4de9f' 
  AND token = 'vcTTy71P656zDbPV7EtvvIu58MWzWtC0q63JV0sJS+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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