Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b72f4cd624deb118e082736185aef02666badbeae55d9f972f6b6de4117a8ea2' 
  AND token = 'OhL3Iio4QIzdal4Ypp45+YnHFXegz3yRtIRCrYvcJsY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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