Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27637fe36a3d67fd8c89ac8b15d41f6f4cf740b573225b9eb385002f7cd900af' 
  AND token = 'ToXRi1FreLhalRkUAgYqTcSHA2FGBFX87Gq4reuSY/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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