Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '989e01555bd4e17b9be0c52a9adf2e1775366db4623ecf0b66a45d3f10339439' 
  AND token = 'UjXOT32R3/GMfksGZJwo/XVc7P/s/z4AT9y5XN7apS0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}