Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06a74dbfb0725c00cfd9353a06df673819abe74b0386d84743aeaa7e0d5c187b' 
  AND token = 'u5p5Txjrfl2c0f77IfHxYS+DJpxULJadYPqDeg7nMn8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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