Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48ecda629c7ce52daae72de2ecbd400b3b07b8fd46336fd50f96dbbc3c6f7564' 
  AND token = 'IBsiSafTlud2O0PR428tJaMp2tqO76OUagZjMaK7bRM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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