Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e16d095df34e039c21306c5bbdc6b65e50f0f9785d5151f0a3e8ab88a99d51e' 
  AND token = 'rQe6qv7K9/q1sfWNIK25jdLGw93s4MUhPOnysxHAAYM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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