Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bed97ef55d2279d4caade1ad66e37b2ddffee28de90d8908ee0bc4dbb122a43' 
  AND token = 'HsEiINCiwj5WjWJyiAj0rZTPiSW4uqZoVVR4rwI+opY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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