Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '07d3cab090de482d6a75555592cd556355d1251711546b603a0125a52fce5686' 
  AND token = 'ayx3AUywyhwH1wffcAWMQ1BlJVKZwV1Gv3djO5xTnNU=' 
  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"
    }
  }
}