Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a794fa11339f6fd76cd5338f3312672d16d632b8eac44701a9d41ab935201f2' 
  AND token = 'w8dToUVfrutEWfcAXKi3zourCejxnZVaIVx2L3/8YwI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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