Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26fa076477af38115d3804ed29e3ddea34de8b402af84e4c2b407dd106485ed5' 
  AND token = 'O2SSM61R/xc999brmNkW9sy6Ah0XsSseklPE+ZDagPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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