Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0741a1e8a93a718dcc72a3a9806f8191a727af028e01ca0f14d5861e044add8' 
  AND token = 'NPkPVRd9DyTlrf6bAeyjoysDS9z/zbliqUTegx/yJjw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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