Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '05646e0d90c20e08f87d1ae5342aea31e9aaed83024598dda6488e3fe0d7f6be' 
  AND token = 'yoI637jW8GZxmow0OT4xfgqlFaEn2ZBcVIDQvKXXBvA=' 
  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"
    }
  }
}