Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd22f405f346fc933319afda2589bf97cd035d7857cd1cc55849164cb79abef7c' 
  AND token = 'j6MyBKdodLwoxbdxNmv3OoriIPQgdPkxw6ApDmfvV54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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