Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'baf3306f20cefa5434fed30f5774ac3ddd4d003b61af9b512991cc53458ec06e' 
  AND token = 'c+KqQYQEkavewgMf5b7dxnlYB7dRCXzn1nfpHzUk6LI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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