Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '531b50094075ae8efc081b2b83ad765865370297472f5a0edf98f148dc5e3c84' 
  AND token = 'AXqsGboXRUcG5tQ4phLsS9nol2D44ck3kSet6ltOpPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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