Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4130990520e6676ed61bec6f005df7f00330bf5c52e68664443b2f416d803ea4' 
  AND token = 'mXNERebIHlwCppJWzqASU+KTF/oBlEsyV1hJb/74b2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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