Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '235d3c986d6575432b5c8aeb63a52cd15145258d0114b2d8e935bea3a6db5031' 
  AND token = 'pztj3Hv/53C5KfmASBWPp41SLdfNNTK/zu78S2bnHQg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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