Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '953af39288cb5d42f4dc4db9f11cdadadceb8a3395e8bee58b7f6b6cc31eb407' 
  AND token = '+bETFT66H5tseA8y73E4oUg6lNSyMral3ShHjP/bEMY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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