Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b866ab5c6f07c15e74e64088a2ccbe4881dc233f52854b3955d8cf2f12d2ace9' 
  AND token = '/hvjbEinht3UehsGNmWHZaShfn9fjSD0Qweq9BkwaZg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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