Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2da085104e3312c11874e45a3b7680411b3e4aac18a8c9f53697e8c43b85be0c' 
  AND token = '6iB2DWk2WBvAiXUXZoLxFZ5NGHDtVopvAkIJTC9CPls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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