Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee3a9d349159a485d18f18dfb8bf6180e77d5ef5f1274d3ef28e3cc0da577abd' 
  AND token = 'JkeytQMIytq+t24883xj8gkKtWFtLWPBeCS7koF/xG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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