Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eee6e99ffecbcb93d9d8b3ec24b654457d316c1b5c23499880bb76219a014203' 
  AND token = '8zJoKyunxfhmsfbkPgqDz2vNHIEJD7NdPsNcdEpHJ70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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