Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '3b84442c23e4934fd9aff328fc3316f85b3952094465b34a7971f5ae84ab6339' 
  AND token = 'vxhOo5M/QRnOxysVJVXPWZRt/4sUgom4oCOXbdMyYxk=' 
  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"
    }
  }
}