Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96c176fd034302bb7359cfc97d3e79cdd633afe614b88005b15a9302c72b3d70' 
  AND token = 'kjfkKTwEF9/WGvAjqi/KUt162IajmiPxLS6mJIQLn7A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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