Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '96bbcdeab7b0c4906ae84e6c11272249c7a5a968551cc2f854d48a8711424ac4' 
  AND token = 'FCKMxJmgsAmvdkYNCtYd2wx1WA/ApVwsvMV+w1LZKmA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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