Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '828f62b40cdec61fd39f4b7585b754e663d981f4b8d7c08e49416125000006d8' 
  AND token = 'fBWMwWe6YMcX0syD+Im14DuWl0cYjVM1WK1HdWbS13A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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