SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '9652e04c17169e3c510cdc00aa72291ce2d318e4494f1d8997cfea226f805f23' 
  AND token = 'lHzTZBmdZGnfhRpgoku/kdSRb6cC4oVKLNXxvkmatKI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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