Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d464fea3565661c180d2e013ba5f53bb3013c54365e5e97380490a15054c3e0' 
  AND token = 'rnbwtOpY1cbjd0GyC+2HRaa0LGDdHShvR7N/gPLqB1k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}