Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90246a18d958dbb78656057727e4601697c7f56f76d507b88620b173f7f5eb70' 
  AND token = 'gVJTShIa7zCqXniN1yis7Ry6kGb3cjuaDpURAz5YFgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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