Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bce9c67f1cd1d8b0c5f09a0660e3b158ac3d8f732d7d1cec27b9abd36ff933c0' 
  AND token = 'EE13iZZkWkbVhfPhO7AryZ5qlnUh2wujTrpsoTKEd0A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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