Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10670fce0140debed874fc040d81a919f3c7bdc1d078bb7733127e44d7c268a7' 
  AND token = 'nBSrVkNwbRFBu0gnytzf/nyufjVMmZ1tmz96m9d1TWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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