Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b140e7f4446659a1dad282275403fd32d02b67f4565718e16e0a5fd3d6d6f12' 
  AND token = 'B9kBLpn6uaRVMJYY5u+kTwaJp5UsA8kHD17GE5L6GP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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