Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd9da2ab19318423125155edd26076e263623681636f5b01b6f50822e68c96084' 
  AND token = '3dDMI2NkxKnOebTngMUN6GGOq7d6d/+hmFRBt4cm+48=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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