Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8562aa8181c97885b239a4b797d491a17145b5365dbd66b627efac05f775cc57' 
  AND token = 'gegsIxYp4aKeutj1hiJDr8nfnljaYxeWWmmIhyaDqsw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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