Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73d312fd80e56e9c7a68a00309aa20aa1c33e8bb57c8a8d25fc1334f11a431f1' 
  AND token = 'now88ls14q5G1gpCke3yGIQo0yms0afZH9lDxHf35BY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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