Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69f2b1ab4a4fd14939d5bc0873baa6724b3d5abe4df3b05324aaaacdb469274b' 
  AND token = '7cWGAgUZnE/KN5+7Xr2K1Abbv5lsry4/Llnyp29G0WU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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