Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de04a39df6bb15a9a82acac105db5fcae0ad584024200ad80c197aa3a9b6c4c6' 
  AND token = '/YmP7Jp6qI7UDGJWh1CvW4c7S+mi0U8e/P7lbk5fqjY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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