Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54efa1b740d2c609ba162ae00a0f218fa6188bc44ee6737549f4457ea9e96bb3' 
  AND token = '7SuZZGQSyTZAHvwcf3IuIDpEC5BLSiZ9iXMKgmglkBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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