Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '3bb95b9cf2aa6a3f1e810778db9ffc30931aa2e2450a42fda0693c06c950f137' 
  AND token = 'GivHqvBlTG/2fiUmN6PxqxdHX6Pf/90MdNEnSYU8koU=' 
  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"
    }
  }
}