Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c941b070f29c5faa17d90c176dfe125a569a7de41188c721ead7f68fa37b30dc' 
  AND token = 'ooy/9jSEzjwXU+UN/2uWdRLRKLzggBeIN/XsAym+na4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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