SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65366822824b5393413e7e5d6635c3fc13a6c11acdd4f6901b722f58663c5999' 
  AND token = 'e3Wao/YToX3YU4o++skYFVD2PjBu3qlq+kwu1jQ2hgg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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