Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c487390f69fccc82342e31f75806efbfe18fd5ff0f8cdcca539b49913e93139b' 
  AND token = '9JENqbQxKNSwjGGftE99jTsCjw0AgUAkQuGIpgnMqik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00089

JSON explain

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