Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1fea96cacdd5e73a642ee3c4fbb0f10d7a2943328cabe61da109b403c8ba9317' 
  AND token = 'jqQkAwTecHqC2rXn+a/D8bSJz41rNq/kcKkqViANga8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00070

JSON explain

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