SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'b3761bca26b3ea67258c222c2eda657534c5f261631a1812a699710d6228c0b1' 
  AND token = 'FyLUAKshZIe+YI9SFmGXbfoogStIqOzHh9Kq7U8n1Ck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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