Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22da96ed8ed012af2dbb26e257fa17366e5d28717873bedc904fd940aacefd58' 
  AND token = 'YlorqFNMJ90ArkrRkcV5WjzVJWrameQ9uu7LgkwbeNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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