Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '694dce5ee12706886838b7891224c89ea7ecec4334a49ba339fda9fa4427e127' 
  AND token = 'PgPc5c7ySmRBVTG/zLnQesmKaukhxTA8JJRAFPTvx5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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