Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23df9bc6769bc5614e19c53f3cf8cdbcf9083395ff36f428a7a26c93f2ddbf9f' 
  AND token = '9W0//AAD6jHyUU+AFDWSCA54/rqyFMbZOGcVnW8R/Zw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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