Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f2104d64130df4f284135c6c268f8f6364c69e1ec7d27e2e461c87959d2197d' 
  AND token = '5pZ96ViEa5wjU7oYLBrH1Ma7CWyuRVq4dD8u7B0r/qg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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