Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85b93d384658886993c1ffa69c614ce2d0742082c39336fb692cb67f22219cbf' 
  AND token = 'fONJ7HqNHo3SpZvnxU+WVv1rdDLwxHDgWqD2iHlmTOs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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