Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5467d3b92b7fe195306d4184848e347fb8240400e72fef7385ce46e213f44eb3' 
  AND token = 'XupD+j55o12eqDhVbK0QCotR2j/PTZ4PhJDKmO3HZlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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