Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6c203a423c9b45469b23be80e5b424c9f532a337ab02776204f0190ab16ec5dd' 
  AND token = 'sfe4TZXBVtPX1uM4v4GR6KsW0uWM2Al6ueICnGnBRuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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