Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0de4f69257e6c987574980506a0401eeceecd9af132f40feea9f7a89d396b7a0' 
  AND token = 'rihyCH3FFTj6Sfbtrs5XtWGHJNu+LLHVp6c4zHXhp+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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