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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06189b127b7420b703756e9132beec5ac0eb24319f0ee76e6c6ce9b2e05f6ce4' 
  AND token = 'kNgdzK6Kr9y0GyeYL3PHIqM0HF4EMqpZU1dvNf8YiSQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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