Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '958d52f26a4157139f6debba4ec7717cc0c4ca42e3cde1a0c4cd2bb1c85b3888' 
  AND token = 'goVCKa9YlqavFyFr9vxVCGi8AkoA/jye3n8zg/uIbxk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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