Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63021b9710d7dacd3cf25e35e6ecdbaba54e87e6688336cba7035b2eb2e513b8' 
  AND token = 'qd7YS7MpMAt34S3LLwxmtfWjxxvExv+v7AWXA0Flh/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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