Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '530cd28a97178e3f0d899fb40569697d3ceda88df8119becb87e3f976cb8ab34' 
  AND token = 'ZBqYRnp81nVTsTpjxhOzaSLitGz95nnI8VZ9rqL0B6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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