Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '33f1feea2643d03637f5bceba39f80b1f5a7b27157349d7a421c322aba5f4e16' 
  AND token = 'SUY7G9MwR9AKpnyK7M16NteVErLJC9QjVQxO4tkA4EE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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