Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '896b2d5e30f6cab1d3b042503d7e7aa3af64c95a67863c36709418d204011203' 
  AND token = 'ntRj0W6ID6I0xHQqJAcXIkgkG5IF1vuhS6kWdmy2VXk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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