Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d8622a5ca589ff0696e79d45ddf71b77159c381d83eadb4440c2161bf3d2438' 
  AND token = 'GKQXoaSzvJzQTL8DmnGe0yjecpDS4ePKwc8k6wSb4es=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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