Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '282d858775f938ab0029d39f2078cdc74548de2002eed2cc88d7e3cb3af7b922' 
  AND token = '0+2L89D86XglhBKI3GFyMxeUAtEvlzIoPOUjN0LnxMM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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