Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60cfaa5687a876cbe1ed7aa2309cec5bf2a818aa744ae29457103757d5d88d95' 
  AND token = '6U/qm6n28tTtL+5ug/akWCcA4GFHDILWPcXdwVUqbFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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