Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0ce0497a59920f38f7b14a9a7e60beea3ac5455b838a7d1ed97280b9f96f7b0' 
  AND token = 'dhLlsW6IgTT7FRZuKbAcNCM3Lm9pqkuKSycc7JsEBDI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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