Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85aff71a7c8ba539719f8db7ca68c8a11e8ae86305fd5dad0909bc57defa4887' 
  AND token = 'r7BOqeTU40n/aU9biIP/Q6wt+qQImdGoe5B4ghtiQJ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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