Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb27dced4e2d500c3c3009162929017ce3985b3d704169710e0c0d80b86f747b' 
  AND token = '0WdF8YZaJOftwIqqQlRYLDW4ypQn6Y1SsTVJiVyuxIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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