Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01a9778515b749ff456445b19ab036e7729c77946c0cda3aa20ef4c75825e98b' 
  AND token = 'h/f7ubTW2E8lOePv/7oDqRAf5616MlVMGeA3g70bFac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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