SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e58326173f8fcafc11aa70b292bf7167596b83b26682700a83a8ab334d559992' 
  AND token = 'NuLtqW/D2JyoY2whFJm6UP2dzelGq9nNpW0zMPEUfRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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