Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9aca5d45b19357089a5b46d1cd0b35bb737c247c29600415e07709c6beddf16' 
  AND token = 'ZYScRWb2GXw1WrsVk1fpIPr4LqtNRPTeesBQHbrY+kE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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