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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79037311ed0828338bac425d8b4e1504e2504278e9ec58e268c06d8079d31343' 
  AND token = 'E0naBv1kv5L6qFtBIQKVtL41pbDZlhPUHxfjnn3ypLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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