Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dda83dadd3310019073665345bac6a7b27497d99ce4849e9f00f9fc9c1ac3c98' 
  AND token = 'trZj/4x2Qz7fAQt6BLPCVWtfaljkBu7UMcO5ThoWfNA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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