Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a00898274167f005b1aefd27ec819464471bbf58f3746495a66512c92f5948ce' 
  AND token = '+85Hc9+QlxvMemoGES4Ug8yAG55ewI/+MfTq+K/sDA0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}