Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90c334b77948fe208ca9af4fbc94c8df1fd15f0bd6c3c99e1359fa528556f7df' 
  AND token = 'G5YvAYEIcPtFm3AVyRynNC76vh1Z6ldbJQNlwg6Sudo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00096

JSON explain

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