Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bc7050c7a93f2cd4d70743591f1dfa60c56b829597e91b4f5f9c5ce3c581f27' 
  AND token = 'muzpKifMup8lfqZuIvdFy14fLLFwGpQ8K340ppbf6aE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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