Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9bc9a342775d95c527f0719dfbe7373adbd9de8352299249f078cfb41db7682' 
  AND token = 'he7Vi2CmLj3lttI2xQHQ8D70Ll0JBragyMH8Cz2ZDXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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