Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0fae8295b7fbce1cc7c424f88e67c4942cabaa47efec0c06441091a039a4ca50' 
  AND token = 'y879lM3pislPAOLUbic52GZYKXXTAB28tOzHppYORGc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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