Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '485586c2ca1a40e2c765733e7607ede17bb71ae23b9b151719f9a88ab9547b4a' 
  AND token = '72bxN4ehvG0z1u/iFSXfydWbI/I+jgFbDvnqRoYEcqw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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