Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6b736fc46c16f49a4838bfc1e5c17a61fb84992843c953344335c1311394a27e' 
  AND token = 'XcGzR6wrgOWENXi15NjC/51nFNFhtvMm51kwy8sa5Kw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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