Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '128d3f56db395db3d46b7f15f72b1b9c9c3a6b85165c8784815b5eadb7587f9d' 
  AND token = '/7yITBu35vRIl/iVNbFvHs33r2cjjN9BexLJx6fPnJk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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