Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6aafebcd2bcb90e87f51b577325ca723fa771e6c9685c2f0ed6a83746741f1ae' 
  AND token = '2jgnRB+J/5+YAEPuQZ5I04zgdwW5NfcXlQNpSBoenHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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