Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba5a677e9ee604eca07eaf7db32c73475e1eff46f10595a4701961324ed07809' 
  AND token = 'dpQRIZC6jRtb/xpQpdxaxnbGsYyC9RiQY5kzDVN8NMs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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