Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b023b8360f2180e3226efaf6617c1e63d9c32945899dd3176377176d98ff2edc' 
  AND token = 'X04kCvUtWOGWfUoXwt7K0p9yvrY1P8grwj0nfG31Pj0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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