SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '49c8c5622f8720b01b90a7ad83c9bc5edd73c7c45425550cf7f95434634836e5' 
  AND token = 'YkUd1j7J2XDytNTB/AUiZ4CHuar/m/wVxIUd5LCnhhA=' 
  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"
    }
  }
}