Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '649df6a4a08d793d807902afae38eac3cbaecbcd6530a76e20e2e99dba2d8456' 
  AND token = 'UgQ2oN48y6KuwolR4eEvy9VSiWoldsgYkFzsL7xEQPE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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