Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11fdb4356f5f477ea675836c5a4a633290ba8208d6b580befbc7c442fb93654c' 
  AND token = 'XzuE2hDHME66Xd/5AbM4IL2ciHg66Zbz+i3Nr33V3Ks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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