Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0016b53d9a8b99991592a3cf0c5f99cf15e91a2b0116d7c87a9ee1b6f94c1921' 
  AND token = 'xEtPkTN3gOTrr0/lD2myAmHEVo+7Uy05bnE3auCgjo8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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