Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e199b2850155c90f3549eacf9bfd7840ff6df074e8ec8e4c8ffac9a8eae32e8' 
  AND token = '1TRtICShNirEJRCURVEz77l3/LCyves1B+sDlGdUZqE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}