Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '71b682ae373e831324e954d93fc56ad72245c35b76870864f2752e9fe1cd9127' 
  AND token = '/WYVwHDdG3HqC5eKnIk616xcSVZzOkaO/TDN/A2qDp4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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