Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2baeba140ad45ccd2dd3155abf42d99081ad525498079a0e1acc5ba9962172d1' 
  AND token = 'tUfdiaq5E+k8MB5MjO2bJiffUip7YjFn6FtIi4w3yds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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