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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '33206f448e08dbd8a3dbf5189df9c2aac681bc72b8b12e983f6bd6f8eb0ba984' 
  AND token = 'mcNCYfHhcutcZO3ktSeNJazk++GwqpZ0VwRASzudQNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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