Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ff9447a2edd8d2e341adda25afccc7afe9836e515db086896a95812a3e4bb992' 
  AND token = 'Gjqo56I6agm8qipjFtx5e7O5PfFjnzugP94e6qzov0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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