Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd11b249ceb3ce4de4a6a1b6d415d98d3791a28a7f1c33610b33a44787c735757' 
  AND token = 'dddXUggzyzgfEzpKZb9CdKKH0t3axCoprD87D35vmWg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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