Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60a32b357cd35ca6d88e9bb0a4af197cb3a821a7ef240c83402b0d517f0a7ea5' 
  AND token = 'M+WiCP3KayO/SWQUTm9cg82jIyZ8xqZAED75RnQpnfM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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