Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65722c11d3e51690431d66fd5328ff55006a1a3bee560dabc26a7e1002b38999' 
  AND token = 'oh675ZL7U3JbVhOy/ABEvkzTpC8unDByjy9FJXaMbqU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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