Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '1cd09470b9453e2f003282e9cdbde984f29aa14ed16012d9c61f4d4cf5fb53fe' 
  AND token = '5Ht4BJvQbDdxhttyvP4X7vqnJ41hA30VmVwjOiEzx80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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