Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2a0615fafbb4dc23bea619d16a29d9f9cb3a43147672b00f5b7a27927f595091' 
  AND token = 'aHWHO9H+1Lcf1B3i5W32wNIMZkTK37YHKgMMzJ1jolY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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