Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4aeab739016d224bac449efdcfba4c2de111d8fab2c90f7b16aa4a7c94fd56d' 
  AND token = 'insaqcf8a1ylO1RBt6UEro48frKKNj2gvU4AlT/6F9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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