Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8da8efae0b7352abc191b513a5032d1db5b2d03b8301fe8f17a295d4696dc2bc' 
  AND token = 'Pe4lh2no8csyLitW21WInsN0BY1oGBgoDO4lLidfkr0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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