Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10e7a93d74f3c5be4caf9cd39f55f15becfff3e42048bd0be5c2001347b6c890' 
  AND token = 'RuvjpPodGfiKftFcuRDaw1eIul0mF3sua9I/Drgcb8s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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