Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '790cebe6d3518cc45aef83fa86e9c20bf7cab84701d4681322cdd464669ebe0b' 
  AND token = 'RC0KAwbbdYLgitebAQ27C6bnRUo69sZXAGRkJ3K35DE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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