Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e595e4c71c450cfc9843c087ceddab422b36e75b6a1b7324ee698655075962ae' 
  AND token = 'wXynGJoKrdXo3e9nTbkX+o3L+f59H8i+qZszBaj7P4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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