Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b92cafcb3ab911ec122ec050fdec768b35c5039248cf0b120b29fe862d161b2' 
  AND token = 'hSqqGaMOCfHf18y79cIHIMylgs7aDwOKL/Fe/UaTdIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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