Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '370297cd36fb38e2485f81a55a9a07cd4ec3b378b59eb66a1829a7ed467f6e30' 
  AND token = 'e8gAvpZ3ysgef4fanJBSRINqUaEk/+iwhwOenWq2GQA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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