Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d9358af59d1b8ce4634722bcbd5d4755058f91d5286964f8a2b0acf605a7a35' 
  AND token = 'LOgdYaX0NUVtTuQ2du7Mm5ZRdb09sqGevx/bNuPkfdI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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