Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '985ecd27408319120b3082f7172e33746a9e5e27c33ef1071c3e78d904d5f7a1' 
  AND token = 'CaNRNy+540D4IVEWt68hdFq5bmWjvKamcUR4SCYcroU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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