SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f1fe132f2a7c297c1b2d78758d6a0033dd1e79d362e77dc77f3f0bfef6c1646' 
  AND token = 'VwNt4lcwGCJjN1Fhg9RzXpm6j24YnJGA3AauvMhj/AY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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