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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2232ac5c1a05877fd1fde79e5fe7acb66c74d54e684a2f1164ad61c9149468df' 
  AND token = 'uawGwsH17/x4HUcucs7zqSl++P0rFz6TW9HFpc+jd5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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