Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e091d5193b17c2cc8926c8e23c8962aaeb7f96051d05efc4e69a8b7b92d1876e' 
  AND token = '36rhyAa9udn6cHJrwe2zWlYzQUJCJUPH7C+QbRdI4Ig=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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